package com.guw.TestThread;

//测试生产者消费者问题2,信号灯法,标志位解决
public class TestPC2 {
    public static void main(String[] args) {
        TV cctv = new TV();
        new Player(cctv).start();
        new Watcher(cctv).start();
    }
}

//生产者:演员
class Player extends Thread{
    TV tv;

    public Player(TV tv){
        this.tv = tv;
    }

    @Override
    public void run() {
        for (int i = 0; i <= 24 ; i++) {
            if(i%2==0){
                this.tv.play("演员表演中");
            }else {
                this.tv.play("广告");
            }
        }
    }
}

//消费者:观众
class Watcher extends Thread{
    TV tv;

    public Watcher(TV tv){
        this.tv = tv;
    }

    @Override
    public void run() {
        for (int i = 0; i <= 24 ; i++) {
            tv.watch();
        }
    }
}

//产品:节目
class TV{
    //演员录节目,观众等待
    //观众看节目,演员等待
    String voice;//表演的节目
    boolean flag = true;

    //录节目方法
    public synchronized void play(String voice){
        if(!flag){
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("演员表演了:" + voice);
        //通知观众观看
        this.notifyAll();

        this.voice = voice;
        this.flag = !this.flag;
    }

    //观看节目的方法
    public synchronized void watch(){
        if (flag){
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("观看了:" + voice);
        //通知演员表演
        this.notifyAll();
        this.flag = !this.flag;
    }
}
